Acrobat Reader for Android doesn't show the folder structure

When I view files on my iPad, Read displays the folder structure. For reference, here is how it is set up on my Mac. All of these files are in a dropbox folder. I made a QR code and scanned the code using both an iPad and a Samsung Galaxy Tab.

Here is the same set of folders viewed on my iPad.

And here is how the same set of folders looks on a Samsung Galaxy Tab. The UI is totally different, the folder names are displayed very small (and not obviously folder names), and only those folders which contains PDFs are listed. So parent folders that don't contain any PDFs in their top level (such as Fuel) are omitted. Plus, there doesn't seem to be any rhyme or reason for how the folder names are organized. It's not alphabetically.

Why the inconsistency? I need the entire folder structure displayed. Is this an option anywhere for the Android version?